Pen based computer



FIG. 1 is a front view of the pen based computer showing my new design;

FIG. 2 is a top edge view of the design of FIG. 1;

FIG. 3 is a bottom edge view of the design of FIG. 1;

FIG. 4 is a left-side view of the design of FIG. 1;

FIG. 5 is a right-side view of the design of FIG. 1;

FIG. 6 is a rear view of the design of FIG. 1;

FIG. 7 is a cross-sectional view along line 7--7 of FIG. 1; and,

FIG. 8 is a cross-sectional view along line 8--8 of FIG. 1.

The broken lines shown in the figures are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a pen based computer, as shown and described. 